Reference | {Deposit:: MESA HEALTH & SAFETY REPORT 7-19,21-72.}{Deposit:: MALHOTRA, R, AND P.A. SMITH. DIRECTORY OF ILLINOIS MINERAL}{Deposit:: PRODUCERS-1974. ILLINOIS STATE GEOLOGICAL SURVEY, MINERAL}{Deposit:: NOTE 64, JULY 1976, P. 80.}{Deposit:: RCF LIST 10/81} |